Guide anchor for seat belt of vehicle and method for manufacturing the same

ABSTRACT

A guide anchor for a seat belt, and a method for manufacturing the same are disclosed. The guide anchor comprises a guide plate having a latching hole and a slide guide hole formed therein, a guide piece engaged with a lower circumference of the slide guide hole, and a first molded part for coupling the guide plate and the guide piece. The guide piece comprises a cover, and a second molded part injected into a lower surface of the cover. The second molded part has a recess formed in a longitudinal direction at a lower surface. The cover has cover eaves extending from a lower portion.

FIELD OF INVENTION

The present invention generally relates to a guide anchor for a seatbelt of a vehicle, and a method for manufacturing the same. Moreparticularly, the present invention relates to a method formanufacturing a guide anchor for a seat belt, which can remarkablyreduce misalignment between components during a molding process andfrequency of defective products, and a guide anchor manufactured by themethod.

RELATED APPLICATIONS

This application claims the benefit of priority under 35 USC 119 ofKorean application number 10-2004-59676, filed Jul. 29, 2004, Koreanapplication number 10-2004-59678, filed Jul. 29, 2004 and Koreanapplication number 10-2005-41311, filed May 17, 2005 the contents ofwhich are herein incorporated by reference.

BACKGROUND

As is well known in the prior art, a seat belt assembly for a vehicle isa device for protecting a passenger during an accident, such as acollision. The seat belt assembly mainly comprises a belt, a guideanchor for guiding the belt, a pillar for supporting the belt and theguide anchor to a vehicle frame, a retractor for holding the passengerin such a manner of fixing the belt instantaneously upon the collisionwhile allowing the belt to move according to a movement of the passengerby restoring force in a normal state, and a free tensioner.

Among these components, the guide anchor is a component equipped toallow the pillar of the vehicle frame to freely shake in forward andbackward directions while guiding the belt as it passes through theguide anchor. The guide anchor has numerous constructions according tomanufacturers.

FIG. 1 shows a typical construction of a conventional guide anchor. Theguide anchor of FIG. 1 is disclosed in Japanese Patent Laid-openPublication No. 2001-63517.

As shown in FIG. 1, the guide anchor comprises a metallic guide plate 11for supporting a weight, a guide piece 12 through which the belt slides,and a resinous body 6 molded over the guide plate 11 and the guide piece12 in a fixed state.

Here, since the guide plate 11 is temporarily coupled to the guide piece12 by resilient press-fitting before injection of resin, there is a highpossibility of misalignment between components during molding due to asignificantly unstable coupling force.

FIG. 2 shows a construction of another conventional guide anchor. Theguide anchor of FIG. 2 is disclosed in Japanese Patent Laid-openPublication No. 2002-104133.

As shown in FIG. 2, the guide anchor comprises a metallic guide plate 2for supporting a weight, a guide piece 3 through which the belt slides,and a molding part 6 molded over the guide plate 2 and the guide piece 3in a fixed state.

Molding is performed in a state that the guide piece 3 is temporarilyfixed to the guide plate 2 before molding. As a result, it is possibleto prevent the guide piece 3 from being separated from the guide plate 2during molding or conveying. The construction of this guide anchor willbe described in detail as follows.

The guide piece 3 is formed at a lower portion with flanges, each havinga bent portion. A belt guide 5 of the guide plate 2 is formed withlatching protrusions. Thus, when fitting the guide piece 3 into theguide plate 2, the guide piece 3 is resiliently deformed, and is thencoupled to the guide plate 2 by wedge effect between the bent portionsof the flanges and the latching protrusions, whereby the guide piece 3can be firmly fixed to the guide plate 2 temporarily.

However, since the latching protrusions must be previously formed on themetallic guide plate 2, there is difficulty in manufacturing the guideanchor. Moreover, since the coupling force between the latchingprotrusions of the guide plate 2 and the bent portions of the guidepiece 3 is insufficient during coupling, there is a possibility ofslight misalignment therebetween.

FIG. 3a shows a construction of still another conventional guide anchor.The guide anchor of FIG. 3 a is disclosed in Japanese Patent Laid-openPublication No. 2003-89345.

As shown in FIG. 3 a, the guide anchor has plural protrusions 25 formedat an angle on a slip surface 24 b in order to prevent the belt 23 frombeing biased upon collision. At this time, a slant angle θ₁ of theprotrusions 25 is related to an angle θ_(b) of a perforated direction ofa guide hole 24 a of the belt 23.

FIG. 3 b shows a guide anchor disclosed in Japanese Utility ModelLaid-open Publication No. (Hei) 5-44719. This guide anchor also has aslant groove 23 formed on a steel guide piece 22 such that a slant angleof the groove 23 is substantially identical to an angle of the belt S.

Although the above disclosures suggest the guide anchors of FIGS. 3 aand 3 b be constructed by suitably mounting the guide piece to the guideplate and then molding them or by integrally manufacturing the guidepiece and the guide plate with metal or resin, detailed process andconstruction thereof are not illustrated in both disclosures.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a method formanufacturing a guide anchor for a seat belt, which allows a guide plateand a guide piece to be molded after temporarily fixing the guide plateto the guide piece, thereby reducing misalignment between componentsduring a molding process as well as frequency of defective products, anda guide anchor manufactured by the method.

It is another object of the present invention to provide the guideanchor for the seat belt and the method for manufacturing the same,which allows a cover and a second molded part to be firmly engaged witheach other in the guide piece, thereby preventing them from beingseparated from each other during a final molding process.

In one aspect, the invention includes a guide anchor for a seat belt ofa vehicle, the guide anchor comprising a guide plate having a latchinghole and a slide guide hole formed therein, a guide piece engaged with alower circumference of the slide guide hole, and a first molded part forcoupling the guide plate and the guide piece, wherein the guide piececomprises a cover and a second molded part formed under a lower surfaceof the cover, and the second molded part has a recess formed at a lowersurface in a longitudinal direction such that the recess is fitted ontothe guide plate.

Embodiments of the invention include these in which:

the cover is formed with cover eaves extending from a lower portion ofthe cover;

each of the cover eaves is either partially or entirely bent inward at alower end, and supports a lower lateral edge of the second molded part;

both longitudinal ends of the cover eaves and the second molded part arecut to a predetermined length;

both longitudinal ends of the cover eaves contact transverse ribs of thesecond molded part, and are supported thereby; the cover has latchinggrooves formed on a rear side thereof;

the cover has either grooves or protrusions formed on an upper surfacethereof such that the grooves or protrusions are formed diagonally tothe longitudinal direction of the guide piece;

the grooves or protrusions are symmetrical to each other about alongitudinal center of the guide piece;

protrusions are formed on either the rear or front surface of the guideplate, and the recess of the second molded part of the guide piece isformed at both sides with fitting grooves to which the protrusions arefitted;

the cover is formed with two or more frictional openings such that thesecond molded part is exposed through the frictional openings;

the cover has a symmetrical shape, and the second molded part isfinished at a lower surface of the cover;

side surfaces of the cover have different heights, so that the secondmolded part is finished in an exposed state at a shorter side of thecover while being finished at a lower surface of a longer side of thecover;

each frictional opening of the cover is slanted to a vertical centerline;

each frictional opening of the cover has a rounded circumferentialsurface;

each frictional opening of the cover has a downwardly bentcircumference;

protrusions are formed on a surface of the second molded part exposedthrough the frictional openings of the cover;

protrusions are extended along a length of the frictional openings ofthe cover;

protrusions are formed on either rear or front surface of the guideplate, and the recess of the second molded part of the guide piece isformed at both sides with fitting grooves to which the protrusions arefitted;

the second molded part has a recess formed on a lower surface in thelongitudinal direction so as to be fitted to the guide plate, the recessbeing alternately formed with convex portions and depressions in thelongitudinal direction on a lower surface thereof, and the slide guidehole of the guide plate being alternately formed at a lowercircumference with concave portions and ridges to be fitted to theconvex portions and the depressions in the longitudinal direction;

the convex portions and the depressions of the second molded part aretightly fitted into the concave portions and the ridges of the guideplate; and

at least a portion of the convex portions of the second molded part ishigher than the ridges of the guide plate.

In another aspect, the invention includes a method for manufacturing aguide anchor for a seat belt of a vehicle, the method comprising thesteps of: molding a cover; installing the cover into an injection mold,followed by forming a guide piece such that a second molded part isattached to a lower surface of the cover while forming a recess on alower surface of the second molded part; fitting the guide piece into alower circumference of a slide guide hole of the guide plate through therecess of the guide piece; and installing an assembly of the guide plateand the guide piece into the injection mold, and forming a first moldedpart.

Embodiments of the invention include those that include formingfrictional openings on a surface of the cover and/or either rounding ordownwardly bending a circumferential surface of the frictional opening.

Other embodiments include those in which, when the second molded part isformed by injection under the lower surface of the cover, protrusionsare formed at the same time on a portion of the second molded partexposed through the frictional openings of the cover.

BRIEF DESCRIPTION OF THE DRAWINGS

The foregoing and other objects and features of the present inventionwill be more clearly understood from the following detailed descriptiontaken in conjunction with the accompanying drawings, in which:

FIG. 1 is a view illustrating one example of a conventional guide anchorfor a seat belt;

FIG. 2 is a view illustrating another example of the conventional guideanchor for the seat belt;

FIGS. 3 a and 3 b are front views illustrating yet another example ofthe conventional guide anchor for the seat belt;

FIG. 4 is a perspective view illustrating a guide anchor for a seat beltin accordance with a first embodiment of the present invention;

FIGS. 5 a and 5 b are a perspective view and a side sectional viewillustrating a guide plate of the guide anchor of FIG. 4, respectively;

FIG. 6 is a perspective view illustrating a guide piece of the guideanchor of FIG. 4;

FIG. 7 is a bottom perspective view illustrating the guide piece of theguide anchor of FIG. 4;

FIG. 8 is an exploded perspective view illustrating the guide piece ofFIG. 7;

FIGS. 9 a and 9 b are cross-sectional views taken along line B-B andline C-C, illustrating the guide piece of FIG. 7, respectively;

FIG. 10 is a perspective view illustrating the construction of the guideanchor before molding in accordance with the first embodiment, in whichthe guide piece is coupled to the guide plate;

FIG. 11 is a perspective view illustrating a guide anchor for a seatbelt in accordance with a second embodiment of the present invention;

FIG. 12 is a transverse cross-sectional view illustrating a guide piececoupled to a guide plate of the guide anchor of FIG. 11;

FIGS. 13 a to 13 d are step diagrams illustrating a method formanufacturing the guide anchor for the seat belt of FIG. 11;

FIGS. 14 a and 14 b are cross-sectional views illustrating otherembodiments of the guide piece of FIG. 13;

FIGS. 15 a and 15 b are cross-sectional views illustrating otherembodiments of the guide piece of FIG. 13;

FIG. 16 is a perspective view illustrating a surface of the guide pieceof FIG. 13;

FIG. 17 a is a cross-sectional perspective view illustrating anengagement structure between a guide piece and a guide plate of a guideanchor in accordance with a third embodiment of the present invention;

FIG. 17 b is a cross-sectional perspective view illustrating anotherengagement structure between the guide piece and the guide plate of theguide anchor in accordance with the third embodiment of the presentinvention; and

FIG. 17 c is a cross-sectional perspective view illustrating yet anotherengagement structure between the guide piece and the guide plate of theguide anchor in accordance with the third embodiment of the presentinvention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Preferred embodiments will now be described in detail with reference tothe accompanying drawings.

Embodiment 1

In FIGS. 4 to 9, a first embodiment of the present invention isillustrated.

As shown in FIG. 4, a guide anchor 1000 for a seat belt of a vehiclecomprises a metallic guide plate 100 for supporting a weight of a belt,a guide piece 200 for guiding the belt, and a first molded part 300composed of a resin for coupling the guide plate 100 and the guide piece200.

First, as shown in FIG. 5, the guide plate 100 is made from a metallicmaterial. The guide plate 100 has a latching hole 110 formed at an upperportion, and a slide guide hole 120 elongated transversely at a lowerportion. The latching hole 110 is latched by a pillar (not shown) fixedto a vehicle frame, and serves to hold the guide anchor 1000 to thevehicle frame. The belt passes through the slide guide hole 120, whichhas a width greater than that of the seat belt.

Protrusions 103 are formed on front and rear surfaces of the guide plate100.

Meanwhile, as shown in FIGS. 6 to 10, the guide piece 200 is acomponent, which is equipped to a lower circumference of the slide guidehole 120 formed at the lower portion of the guide plate 100, and whichthe seat belt directly contacts and slides through.

The guide piece 200 comprises a cover 230, and a second molded part 240formed by injecting a resin under a lower surface of the cover 230.

The cover 230 directly contacts the belt, and is thus made from ametallic material such as chrome coated steel which has a predeterminedrigidity so as to withstand friction. The surface of the cover 230 isformed with grooves 239 in order to prevent the seat belt from beingbiased. Alternatively, the surface of the cover 230 may be formed withprotrusions instead of the grooves 239.

It is desirable that the grooves 239 or the protrusions be formeddiagonally to a length of the guide piece 200. Moreover, it is desirablethat the grooves 239 or the protrusions be symmetrically formed about alongitudinal center of the cover 230 so that force from the belt can beuniformly distributed.

Additionally, the second molded part 240 formed by injecting the resinunder the lower surface of the cover 230 has a recess 241, which isformed at a lower surface of the second molded part 240 in thelongitudinal direction so as to have a width corresponding to athickness of the lower circumference of the slide guide hole 120 in theguide plate 100. In this case, the recess 241 of the second molded part240 is adapted to be tightly fitted into the lower circumference of theslide guide hole 120 in the guide plate 100.

Both sides of the recess 241 of the guide piece 200 are formed withfitting grooves 280 engaged with the protrusions 103 of the guide plate100. As a result of engagement between the protrusions 103 and thefitting grooves 280, the guide piece 200 can be securely prevented frombeing separated in the longitudinal direction.

Meanwhile, the cover 230 has cover eaves 238 extending downwardly from alower portion of the cover 230. Since the cover eaves 238 are finallyenclosed by the first molded part 300, they cannot be viewed from theoutside. Of course, the second molded part 240 also extends downwardtogether with the cover eaves 238, and is maintained in an attachedstate to the cover eaves 238. Accordingly, more easy and firm engagementbetween the cover 230 and the first molded part 300 is achieved.

A lower end of each cover eave 238 is inwardly bent to support a lowerlateral edge of the second molded part 240. As a result, the secondmolded part 240 can be securely prevented from being separated from thecover 230 downwardly.

A rear side of the cover 230 is formed with a plurality of latchinggrooves 233 (in the present embodiment, five latching grooves), therebymore effectively preventing the second molded part 240 in thelongitudinal direction.

Moreover, both longitudinal ends of each cover eave 238 and the secondmolded part 240 are cut to a predetermined length. Accordingly, theguide anchor 1000 can be smoothly rounded at both lower ends thereofwhile having a reduced size by molding.

Both longitudinal ends of each cover eave 238 contact and supporttransverse ribs 247 of the second molded part 240, respectively. As aresult, the second molded part 240 is prevented from being separatedfrom the cover in the longitudinal direction.

The second molded part 240 is formed at a lower surface with a pluralityof movement grooves 242 for allowing easy movement of injectedmaterials.

An exemplary method for manufacturing a guide anchor for a seat belt ofa vehicle in accordance with the present embodiment will be described asfollows.

First, a plate made from chrome-coated steel is bent by pressing, and isformed into a cover 230 as shown in FIG. 8.

With the cover 230 fixed to a mold (not shown), a resin is injected intoa lower surface of the cover 230, thereby forming a second molded part240. That is, the cover 230 having the second molded part 240 attachedthereto is produced. In this case, a recess 241 is also formed at alower surface of the second molded part 240 so as to have a widthcorresponding to a thickness of a lower circumference of a slide guidehole 120 in the guide plate 100.

As a result, as shown in FIGS. 6 and 7, the cover 230 and the secondmolded part 240 are integrated to form a guide piece 200.

Then, as shown in FIG. 10, the recess 241 of the second molded part 240is fitted into a lower circumference of the slide guide hole 120 in theguide plate 100. At this time, latching grooves 233 of the guide piece200 are fitted onto protrusions 103 of the guide plate 100, therebypreventing misalignment between the guide plate 100 and the guide piece200.

Finally, with the assembly of the guide plate 100 and the guide piece200 installed into the mold, injection molding is performed to form afirst molded part 300, thereby providing a final product.

Embodiment 2

In FIGS. 10 to 16, a second embodiment of the present invention isillustrated.

As shown in FIG. 11, a guide anchor 1000 for a seat belt of a vehiclecomprises a guide plate 100 for supporting a weight of a belt, a guidepiece 200 for guiding the belt, and a first molded part 300 composed ofa resin for coupling the guide plate 100 and the guide piece 200.

First, as shown in FIG. 1, the guide plate 100 is made from a metallicmaterial. The guide plate 100 has a latching hole 110 formed at an upperportion, and a slide guide hole 120 elongated in a transverse directionat a lower portion. The latching hole 110 is latched by a pillar (notshown) fixed to a vehicle frame, and serves to hold the guide anchor1000 to the vehicle frame. The belt passes through the slide guide hole120, which is required to have a width greater than that of the seatbelt.

Protrusions 103 are formed on front and rear surfaces of the guide plate100.

Meanwhile, as shown in FIGS. 12 to 16, the guide piece 200 is acomponent which is equipped to a lower circumference of the slide guidehole 120 formed at the lower portion of the guide plate 100, and whichthe seat belt directly contacts and slides through.

The guide piece 200 comprises a cover 230 having two or more frictionalopenings slanted to a vertical central line, and a second molded part240 formed by injecting a resin under a lower surface of the cover 230.Of course, the cover 230 need not have the frictional openings.

The cover 230 directly contacts the belt, and is thus made from ametallic material such as chrome coated steel which has a predeterminedrigidity.

The second molded part 240 formed by filling the resin under the lowersurface of the cover 230 has a recess 241, which is formed at a lowersurface of the second molded part 240 in the longitudinal direction soas to have a width corresponding to a thickness of the lowercircumference of the slide guide hole 120 in the guide plate 100. Inthis case, the recess 241 of the second molded part 240 is adapted to betightly fitted into the lower circumference of the slide guide hole 120in the guide plate 100. Additionally, the guide piece 200 is formed withfitting grooves 280, which will be engaged with the protrusions 103 ofthe guide plate 100.

When viewed from a cross section of the guide piece 200, two exemplarystructures of the guide piece are shown in FIGS. 14 a and 14 b.

First, the guide piece 200 shown in FIG. 14 a comprises the cover 230 ofa symmetrical cross section, and the second molded part 240 finished ata lower surface of the cover.

Second, the guide piece 200 shown in FIG. 14 b comprises the cover 230,side surfaces of which have different heights such that the secondmolded part is finished in an exposed state at the shorter side of thecover while being finished at a lower surface of a longer side of thecover. Accordingly, the guide anchor is adapted such that the seat beltcontacts both the cover 230 and the second molded part 240 uponcollision. In this manner, it is possible to further reduce a tendencyof the belt to bias towards one side upon collision since a frictionalforce of the belt is increased by the second molded part.

Additionally, as shown in FIGS. 13 a to 13 d, it is desirable that acircumferential surface of each frictional opening 231 of the cover 230be machined or shaped before the second molded part 240 is formed byinjection of the resin, thereby reducing damage of the belt.

For this purpose, as shown in FIG. 15 a, the circumferential surface ofthe frictional opening 231 of the cover 230 is rounded. This can beachieved by grinding that portion using a suitable tool.

Alternatively, as shown in FIG. 15 b, the circumference of thefrictional opening 231 of the cover 230 may be bent downwardly. This canbe achieved by punching after forming a concave shape on the cover on apress machine.

Additionally, as shown in FIG. 16, the surface of the second molded part240 exposed through the frictional opening 231 of the cover 230 isformed with a plurality of protrusions 242. The protrusions 242 extendin the longitudinal direction of the frictional opening 231, and serveprimarily to absorb impact in such a manner of being demolished by aload generated upon collision.

A rear surface of the cover 230 is formed with grooves, thereby moreeffectively preventing the second molded part 240 from being separatedin the longitudinal direction.

An exemplary method for manufacturing the guide anchor for the seat beltin accordance with the present embodiment will be described as followswith reference to FIGS. 13 a to 13 d.

As shown in FIG. 13 a, a plate made from chrome-coated steel is bent andpunched by pressing to form a cover 230 having two or more frictionalopenings 231 slanted to the vertical center line.

As shown in FIG. 13 b, with the cover 230 fixed to a mold (not shown), aresin is injected into a lower surface of the cover 230, thereby forminga second molded part 240. That is, the cover 230 having the secondmolded part 240 attached thereto is produced. In this case, a recess 241is also formed at the same time at a lower surface of the second moldedpart 240 so as to have a width corresponding to a thickness of a lowercircumference of a slide guide hole 120 in the guide plate 100.

The cover 230 and the second molded part 240 are integrated to form aguide piece 200.

Then, as shown in FIG. 13 c, the recess 241 of the second molded part240 is fitted into the lower circumference of the slide guide hole 120in the guide plate 100. As a result, misalignment between the guideplate 100 and the guide piece 200 can be substantially prevented duringa subsequent injection molding process.

Finally, as shown in FIG. 13 d, with the assembly of the guide plate 100and the guide piece 200 installed into the mold, injection molding isperformed to form a first molded part 300, thereby providing a finalproduct.

Embodiment 3

In FIGS. 17 a to 17 c, engagement structures between a guide piece and aguide plate of a guide anchor in accordance with embodiments of thepresent invention are illustrated.

As shown in the drawings, the recess 241 formed to the lower surface ofthe second molded part 240 is alternately formed at a lower surface ofthe recess 241 with convex portions 241 a and depressions 241 b in thelongitudinal direction. Additionally, the slide guide hole 120 of theguide plate 100 is alternately formed at a lower circumference of thehole 120 with concave portions 101 and ridges 102 in the longitudinaldirection so as to be fitted into the convex portions 241 a and thedepressions 241 b, respectively.

At this time, as shown in FIG. 17 a, the convex portions 241 a and thedepressions 241 b formed on the lower surface of the recess 241 of thesecond molded part 240 are tightly fitted into the concave portions 101and the ridges 102 of the guide plate 100 without creating any gaptherebetween, respectively.

As shown in FIG. 17 b, the convex portions 241 a of the second moldedpart 240 may be taller than the ridges 102 of the guide plate 100,thereby allowing a gap to be created therebetween. In this case, theconvex portion 241 a of the second molded part 240 is partiallydemolished upon collision, thereby absorbing the impact.

Alternatively, as shown in FIG. 17 c, the convex portion 241 a of thesecond molded part 240 may have a uniform height, whereas the ridges 102of the guide plate 100 may have non-uniform heights.

Moreover, a rear side of the cover 230 is formed with grooves, therebymore effectively preventing the second molded part 240 from beingseparated in the longitudinal direction.

Although the recess 241 formed on the lower surface of the second moldedpart 240 has a flat-shaped lower surface in the first and secondembodiments described above, the third embodiments does not require therecess 241 to have such a flat-shaped lower surface due to theconfiguration as described above. As a result, the guide piece 200 issecurely prevented from being separated from the guide plate 100 withoutusing the protrusions 103 on the front and rear surface of the guideplate 100.

Since a method for manufacturing the guide anchor for the seat belt inaccordance with the present embodiment is the same as that of the secondembodiment, detailed description thereof will be omitted herein.

As apparent from the above description, according to the presentinvention, a recess is formed to a second molded part so as to be fittedonto a guide plate, thereby allowing easy assembly as well as lowerfrequency of defective products by an accurate molding process.

Cover eaves are extended from a lower portion of a cover, therebyenabling easier and stronger engagement between the cover and a firstmolded part.

The lower end of each cover eave is inwardly bent, and supports a lowerlateral edge of the second molded part, thereby preventing the secondmolded part from being separated from the cover.

Both longitudinal ends of each cover eave contact and support transverseribs of the second molded part, thereby preventing the second moldedpart from being separated from the cover in the longitudinal direction.

The cover has latching grooves formed on a rear side thereof, therebymore effectively preventing the second molded part from being separatedfrom the cover in the longitudinal direction.

The longitudinal ends of each cover eave and the second molded part arecut to a predetermined length, thereby preventing an increase in volumeof the guide anchor due to the cover eaves.

When protrusions are formed on the surface of the second molded partexposed through frictional openings in the cover, the protrusions arepartially demolished due to weights of the seat belt and a passengerupon collision, thereby partially absorbing impact.

When a side of the second molded part is finished in an exposed state, africtional force of the belt is increased, thereby more effectivelyreducing a tendency of the belt to bias towards one side upon collision.

The recess of the second molded part is alternately formed at a lowersurface with convex portions and depressions in the longitudinaldirection, and is fitted onto the guide plate alternately formed withconcave portions and ridges, thereby allowing easy assembly as well aslowering frequency of defective products by an accurate molding processthrough a firm temporary engagement.

Moreover, the convex portions of the second molded part are taller thanthe ridges of the guide plate, so that the convex portions of the secondmolded part are partially demolished upon collision, thereby absorbingthe impact.

It should be understood that the embodiments and the accompanyingdrawings have been described for illustrative purposes and the presentinvention is limited only by the following claims. Further, thoseskilled in the art will appreciate that various modifications, additionsand substitutions are allowed without departing from the scope andspirit of the invention as set forth in the accompanying claims.

1. A guide anchor for a seat belt of a vehicle, the guide anchorincluding a guide plate having a latching hole and a slide guide holeformed therein, a guide piece engaged with a lower circumference of theslide guide hole, and a first molded part for coupling the guide plateand the guide piece, wherein the guide piece comprises, a metallic coverwhich has cover eaves extending from a lower portion of the cover, and asecond molded part formed under a lower surface of the cover, the secondmolded part forming a recess extending in a longitudinal direction at alower surface thereof, such that the recess is fitted onto the guideplate, wherein each of the cover eaves is either partially or entirelybent inward at a lower end to support a lower lateral edge of the secondmolded part, and both longitudinal ends of each cover eave are supportedby tranverse ribs of the second molded part.
 2. The guide anchoraccording to claim 1 wherein both longitudinal ends of each cover eaveand the second molded part are cut to a predetermined length.
 3. Theguide anchor according to claim 1, wherein the cover has latchinggrooves formed on a rear side thereof
 4. The guide anchor according toclaim 1, wherein the cover has structures selected from the groupconsisting of grooves and protrusions, the structures being formed on anupper surface thereof, and wherein the structures are formed diagonallyrelative to a longitudinal direction of the guide piece.
 5. The guideanchor according to claim 4, wherein the structures are symmetricalabout a longitudinal center of the guide piece.
 6. The guide anchoraccording to claim 1, wherein protrusions are formed on at least one ofa rear surface and a front surface of the guide plate, and the recess ofthe second molded part of the guide piece is formed at both sides withfitting grooves to which the protrusions are fitted.